package com.imooc.controller.center;

import com.imooc.controller.BaseController;
import com.imooc.pojo.Users;
import com.imooc.pojo.bo.center.CenterUserBO;
import com.imooc.resource.FileUpload;
import com.imooc.server.center.CenterUserService;
import com.imooc.utils.CookieUtils;
import com.imooc.utils.DateUtil;
import com.imooc.utils.IMOOCJSONResult;
import com.imooc.utils.JsonUtils;
import io.swagger.annotations.Api;
import io.swagger.annotations.ApiOperation;
import io.swagger.annotations.ApiParam;
import org.apache.commons.io.IOUtils;
import org.apache.commons.lang3.StringUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.validation.BindingResult;
import org.springframework.validation.FieldError;
import org.springframework.web.bind.annotation.*;
import org.springframework.web.multipart.MultipartFile;


import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.validation.Valid;
import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

@Api(value = "用户信息接口", tags = {"用户信息相关接口"})
@RestController
@RequestMapping("userInfo")
public class CenterUserController extends BaseController {

    @Autowired
    private CenterUserService centerUserService;

    @Autowired
    private FileUpload fileUpload;

    @ApiOperation(value="用户头像修改",notes = "用户头像修改", httpMethod = "POST")
    @PostMapping("uploadFace")
    public IMOOCJSONResult uploadFace(
            @ApiParam(name = "userId", value = "用户id",required = true)
            @RequestParam String userId,
            @ApiParam(name = "file", value = "用户头像",required = true)
            MultipartFile file,
            HttpServletRequest request,
            HttpServletResponse response){

        //定义头像保存的地址
//        String fileSpace = IMAGE_USER_FACE_LOCALTION;
        String fileSpace = fileUpload.getImageUserFaceLocaltion();
        //在路径上为每一个用户增加一个userid，用于区分不同用户上传
        String uploadPathPrefix = File.separator + userId;
//        System.out.println("===========================");
//        System.out.println(uploadPathPrefix);

        //开始文件上传
        if(file != null){
            FileOutputStream fileOutputStream=null;
            try {
                String fileName = file.getOriginalFilename();
                if (StringUtils.isNotBlank(fileName)) {
                    //文件重命名
                    String fileNameArr[] = fileName.split("\\.");
                    //获取文件的后缀名
                    String suffix = fileNameArr[fileNameArr.length - 1];

                    if(!suffix.equalsIgnoreCase("png")&&
                        !suffix.equalsIgnoreCase("jpg")&&
                            !suffix.equalsIgnoreCase("jpeg")){
                        return IMOOCJSONResult.errorMsg("图片格式不正确");
                    }

                    //文件名重组
                    String newFileName = "face-" + userId + "." + suffix;
                    //上传的头像最终保存的位置
                    String finalFacePath = fileSpace + uploadPathPrefix + File.separator + newFileName;

                    //用于提供给web服务访问的地址
                    uploadPathPrefix += (File.separator + newFileName);

                    File outFile = new File(finalFacePath);
                    if (outFile.getParentFile() != null) {
                        //创建文件夹
                        outFile.getParentFile().mkdir();
                    }
                    //文件输出保存到目录
                     fileOutputStream = new FileOutputStream(outFile);
                    InputStream inputStream = file.getInputStream();
                    IOUtils.copy(inputStream, fileOutputStream);
                }
            }catch (IOException e){
                e.printStackTrace();
            }finally {
                try {
                    if (fileOutputStream != null) {
                        fileOutputStream.flush();
                        fileOutputStream.close();
                    }
                }catch (IOException e){
                    e.printStackTrace();
                }
            }
        }else{
            return IMOOCJSONResult.errorMsg("文件不能为空");
        }

        //获取图片服务地址
        String imageServerUrl = fileUpload.getImageServerUrl();

        //由于浏览器可能存在缓存的情况，所以在这里，我们需要加上时间戳来保证更新后的图片可以及时刷新
        String finalUserFaceUrl = imageServerUrl + uploadPathPrefix
                +"?t=" + DateUtil.getCurrentDateString(DateUtil.DATE_PATTERN);

        //更新用户头像到数据库
        Users userResult = centerUserService.updateUserFace(userId,finalUserFaceUrl);

        userResult = setNullProperty(userResult);
        CookieUtils.setCookie( request , response , "user" ,
                JsonUtils.objectToJson(userResult) , true);

        return IMOOCJSONResult.ok();
    }

    @ApiOperation(value="修改用户信息",notes = "修改用户信息", httpMethod = "POST")
    @PostMapping("update")
    public IMOOCJSONResult update(
            @ApiParam(name = "userId", value = "用户id",required = true)
            @RequestParam String userId,
            @RequestBody @Valid CenterUserBO centerUserBO,
            BindingResult result,
            HttpServletRequest request,
            HttpServletResponse response){
        //判断BindingResult是否保存错误的验证信息，如果有，则直接return
        if(result.hasErrors()){
            Map<String,String> errorMap=getErrors(result);
            return  IMOOCJSONResult.errorMap(errorMap);
        }
        Users userResult = centerUserService.updateUserInfo(userId,centerUserBO);

        userResult = setNullProperty(userResult);
        CookieUtils.setCookie( request , response , "user" ,
                JsonUtils.objectToJson(userResult) , true);

        return IMOOCJSONResult.ok();
    }

    private Map<String , String> getErrors(BindingResult result){

        Map<String, String> map = new HashMap<>();
        List<FieldError> errorList = result.getFieldErrors();
        for (FieldError error : errorList){
            //发生验证错误所对应的某一个属性
            String errorField = error.getField();
            //验证错误的信息
            String errorMsg = error.getDefaultMessage();
            map.put(errorField,errorMsg);
        }
         return map;
    }

    private Users setNullProperty(Users userResult){
        userResult.setPassword(null);
        userResult.setMobile(null);
        userResult.setEmail(null);
        userResult.setCreatedTime(null);
        userResult.setUpdatedTime(null);
        userResult.setBirthday(null);
        return userResult;
    }
}
